非谓语动词答案的疑惑9．Most of the artists ______ to the party were fro

第一个疑问：如果是第四个选项的话,had been done 不是非谓语动词的形式啊.
如果选用,应该是加上who作定语从句了
第二个疑问：短暂动词又叫点动词,是一瞬间就可以完成的动作,而现在分词被动式表示一种状态,是一个过程,与点动词的概念相悖.
附上现在分词的基本用法:
1) 一般主动式用法:
A.作定语:The sleeping child is only five years old.(=The child who is sleeping is…)/The girl writing a letter there can speak English very well.(=The girl who is writing a letter can…)
The factory making TV sets is very large.(=The factory which makes TV sets is very large.)
B.作表语:The story sounds very interesting./The news is very exciting.
C.作宾补:学用于see,watch,hear,feel,find,have,keep等动词之后.
例如:We can see steam rising from the wet clothes./I saw Tom coming out of the house./Don t keep the students doing homework all day.
注:上述动词后跟不定式作宾补表示动作的过程,而不是正在进行中的动作,而现在分词作宾补则表示正在进行中的动作.例如:I heard them singing in the room

首先，谁说前面有主语就不需要引导词，你也不看看这是什么从句，主语从句是必须有引导词的。
再次，不能是现在被邀请，因为后边有were。

D少引导词WHO，定语从句who had been invited to the party这句是修饰前面的artists。
你说是正在被邀请，但后面的were是过去式啊。。总之怪怪的。。呃。。真的不知道如何解释C了。。动词的过去分词作定语就表示了被动语态。。还选C干嘛？